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Superhigh Uniform Magnetic Cr Substitution in a 2D Mo2C Superconductor for a Macroscopic-Scale Kondo Effect
Xu, Chuan1; Liu, Zhen2,3; Zhang, Zongyuan4,5; Liu, Zhibo1; Li, Jingyin2,3; Pan, Minghu4,6; Kang, Ning2,3; Cheng, Hui-Ming1,7,8; Ren, Wencai1,6
Corresponding AuthorPan, Minghu(minghupan@hust.edu.cn) ; Kang, Ning(nkang@pku.edu.cn) ; Ren, Wencai(wcren@imr.ac.cn)
2020-08-09
Source PublicationADVANCED MATERIALS
ISSN0935-9648
Pages10
AbstractSubstitutional doping provides an effective strategy to tailor the properties of 2D materials, but it remains an open challenge to achieve tunable uniform doping, especially at high doping level. Here, uniform lattice substitution of a 2D Mo2C superconductor by magnetic Cr atoms with controlled concentration up to approximate to 46.9 at% by chemical vapor deposition and a specifically designed Cu/Cr/Mo trilayer growth substrate is reported. The concentration of Cr atoms can be easily tuned by simply changing the thickness of the Cr layer, and the samples retain the original structure of 2D Mo2C even at a very high Cr concentration. The controlled uniform Cr doping enables the tuning of the competition of the 2D superconductor and the Kondo effect across the whole sample. Transport measurements show that with increasing Cr concentration, the superconductivity of the 2D Cr-doped Mo2C crystals disappears along with the emergence of the Kondo effect, and the Kondo temperature increases monotonously. Using scanning tunneling microscopy/spectroscopy, the mechanism of the doping level effect on the interplay and evolution between superconductivity and the Kondo effect is revealed. This work paves a new way for the synthesis of 2D materials with widely tunable doping levels, and provides new understandings on the interplay between superconductivity and magnetism in the 2D limit.
Keyword2D materials Kondo effect magnetic doping superconductivity uniform composition
Funding OrganizationNational Science Foundation of China ; Chinese Academy of Sciences ; Ministry of Science and Technology of China ; LiaoNing Revitalization Talents Program ; SYNL-T.S. K Research Fellowship ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Program for Guangdong Introducing Innovative and Enterpreneurial Teams ; Economic, Trade and Information Commission of Shenzhen Municipality ; Development and Reform Commission of Shenzhen Municipality
DOI10.1002/adma.202002825
Indexed BySCI
Language英语
Funding ProjectNational Science Foundation of China[51325205] ; National Science Foundation of China[51290273] ; National Science Foundation of China[51521091] ; National Science Foundation of China[11574095] ; National Science Foundation of China[91745115] ; National Science Foundation of China[11774005] ; National Science Foundation of China[51802314] ; National Science Foundation of China[51861135201] ; Chinese Academy of Sciences[XDB30000000] ; Chinese Academy of Sciences[ZDBS-LY-JSC027] ; Ministry of Science and Technology of China[2016YFA0200101] ; Ministry of Science and Technology of China[2016YFA0300601] ; LiaoNing Revitalization Talents Program[XLYC1808013] ; SYNL-T.S. K Research Fellowship ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2018223] ; Program for Guangdong Introducing Innovative and Enterpreneurial Teams[2017ZT07C341] ; Economic, Trade and Information Commission of Shenzhen Municipality[201901171523] ; Development and Reform Commission of Shenzhen Municipality
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000557379900001
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140097
Collection中国科学院金属研究所
Corresponding AuthorPan, Minghu; Kang, Ning; Ren, Wencai
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China
3.Peking Univ, Dept Elect, Beijing 100871, Peoples R China
4.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China
5.Anhui Univ, Key Lab Struct & Funct Regulat Hybrid Mat, Minist Educ, Inst Phys Sci & Informat Technol, Hefei 230601, Peoples R China
6.Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710119, Peoples R China
7.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
8.Tsinghua Univ, Shenzhen Geim Graphene Ctr, Tsinghua Berkeley Shenzhen Inst TBSI, Shenzhen 518055, Peoples R China
Recommended Citation
GB/T 7714
Xu, Chuan,Liu, Zhen,Zhang, Zongyuan,et al. Superhigh Uniform Magnetic Cr Substitution in a 2D Mo2C Superconductor for a Macroscopic-Scale Kondo Effect[J]. ADVANCED MATERIALS,2020:10.
APA Xu, Chuan.,Liu, Zhen.,Zhang, Zongyuan.,Liu, Zhibo.,Li, Jingyin.,...&Ren, Wencai.(2020).Superhigh Uniform Magnetic Cr Substitution in a 2D Mo2C Superconductor for a Macroscopic-Scale Kondo Effect.ADVANCED MATERIALS,10.
MLA Xu, Chuan,et al."Superhigh Uniform Magnetic Cr Substitution in a 2D Mo2C Superconductor for a Macroscopic-Scale Kondo Effect".ADVANCED MATERIALS (2020):10.
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